Really beautifully captures overall trends as well as outliers such as the following: in the first example (life expectancy / fertility) check out the path of Rwanda from about 88-97 (slowly move the slider.)
There was a TED lecture by a founder of Gap Minder that showed this data in exactly the same way a few years ago.
It really opened my eyes that the things I had been told all my life, and was still hearing from people who thought they were smart, were in fact, based on very dated information that was no longer true.
Once a fact is learned by the general masses, it's practically impossible to get them to unlearn that fact after it changes.
